Question

Factor completely: 18x^2 − 21x − 15

Answer 1

Factor the expression by the GCF of 3:

3(6x² - 7x - 5)

Then, by factoring decomposition:

3(6x² + 3x - 10x - 5)
= 3(3x(2x + 1) - 5(2x + 1))
= 3(2x + 1)(3x - 5)

@AriPotta this better?

Answer 2

well i don't think she knows what "factoring decomposition" is

Answer 3

3x^2 + 12x + 7

Answer 4

@nathan917

Answer 5

if she truly understood how to do these problems, she wouldn't be posting them

Answer 6

she'd be doing them herself

Answer 7

-3x^2 + 12x
= -3x(x - 4)
= 3x(4 - x)

i gtg bye!